Liu Ming, Chen Lixia, Shan Peihui, Lian Chengjie, Zhang Zenghui, Zhang Yunqian, Tao Zhu, Xiao Xin
Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Department of Chemistry, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China.
ACS Appl Mater Interfaces. 2021 Feb 17;13(6):7434-7442. doi: 10.1021/acsami.0c20292. Epub 2021 Feb 8.
A physical impregnation method is presented in this study, providing a facile approach to encapsulating functional guest molecules (GMs) into robust crystalline supramolecular organic frameworks incorporating cucurbit[10]uril (Q[10]-SOF). As Q[10]-SOF has high evaporated pyridine affinity under normal atmospheric pressure, pyridine molecules in this method were successfully encapsulated into the nanospace formed by GMs and Q[10]-SOF while retaining their crystal framework, morphology, and high stability. GMs@Q[10]-SOF solid materials were found to respond to pyridine, being suitable to be used as solid sensors. Notably, Q[10]-SOF loading with pyrene exhibited a unique response to pyridine along with dramatic fluorescence quenching; loading with dansyl chloride exhibited a unique response to pyridine along with significant fluorescence enhancement, having a quick response within 60 s. Our findings represent a critical advancement in the design of pyridine detection and adsorption for commercial gas identification and sensing.
本研究提出了一种物理浸渍方法，为将功能性客体分子（GMs）封装到包含葫芦[10]脲（Q[10]-SOF）的坚固结晶超分子有机框架中提供了一种简便方法。由于Q[10]-SOF在常压下对蒸发的吡啶具有高亲和力，该方法中的吡啶分子成功地被封装到由GMs和Q[10]-SOF形成的纳米空间中，同时保留了它们的晶体框架、形态和高稳定性。发现GMs@Q[10]-SOF固体材料对吡啶有响应，适合用作固体传感器。值得注意的是，负载芘的Q[10]-SOF对吡啶表现出独特的响应并伴有显著的荧光猝灭；负载丹磺酰氯的Q[10]-SOF对吡啶表现出独特的响应并伴有显著的荧光增强，在60秒内具有快速响应。我们的研究结果代表了用于商业气体识别和传感的吡啶检测和吸附设计方面的一项关键进展。
